The big criticism I heard with Gallant is that he was stubborn when it came to playing the young talent beyond a fourth line "grind line" role. Having watched Lavy's roster decisions in DC, you'll find his use of the young guys... familiar.
I'm not a fan of his tenure in Washington. The Caps being my other team, I was extremely underwhelmed with Washington's performance during his time in DC.
I might as well start the controversial opinions. I was hoping the leafs would get him and replace keefe. I can't watch another year of us doing the exact same thing.